package com.atguigu.gulimall.cart.controller;

import com.atguigu.common.utils.R;
import com.atguigu.gulimall.cart.service.CartService;
import com.atguigu.gulimall.cart.vo.CartItem;
import com.atguigu.gulimall.cart.vo.CartVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import java.util.List;
import java.util.concurrent.ExecutionException;

@Controller
public class CartController {

    @Autowired
    private CartService cartService;

    /**
     * 获取购物车信息
     * @return
     */
    @GetMapping("/cart.html")
    public String CartListPage(Model model) throws ExecutionException, InterruptedException {
        CartVo cartVo = cartService.getCartVo();
        model.addAttribute("cart", cartVo);
        return "cartList";
    }

    /**
     * 添加商品到购物车
     * @return
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId,
                            @RequestParam("num") Integer num,
                            RedirectAttributes ra) {
        try {
            cartService.addToCart(skuId, num);
        } catch (Exception e) {
            e.printStackTrace();
        }
        ra.addAttribute("skuId", skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 重定向到购物车添加成功页面，防止添加购物车请求重复提交
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,
                                       Model model) {
        // 重定向到购物车添加成功页面，再次查询购物车数据即可
        CartItem item = cartService.getCartItem(skuId);
        model.addAttribute("item", item);
        return "success";
    }

    /**
     * 修改购物车商品的选中状态
     * @param skuId
     * @param check
     * @return
     */
    @GetMapping("/checkItem")
    public String checkItem(@RequestParam("skuId") Long skuId, @RequestParam("check") Integer check) {
        cartService.checkItem(skuId, check);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 修改购物车商品的数量
     * @param skuId
     * @param num
     * @return
     */
    @GetMapping("/countItem")
    public String countItem(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num) {
        cartService.countItem(skuId, num);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 根据skuId，删除购物车的商品
     * @param skuId
     * @return
     */
    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId) {
        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 获取当前登录用户购物车中所有被选中的购物项
     *
     * @param userId
     * @return
     */
    @GetMapping("/{userId}/getOrderItems")
    @ResponseBody
    public R getOrderItems(@PathVariable("userId") Long userId) {
        List<CartItem> orderItems = cartService.getOrderItems(userId);
        return R.ok().put("orderItems", orderItems);
    }
}
